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Structure of SDF1 in complex with the CXCR4 N-terminus containing sulfotyrosines at postitions 7, 12 and 21
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
3D_15N-separated_NOESY
.338 mM [U-100% 13C; U-100% 15N] CXCL12/SDF1-alpha, .97 mM CXCR4, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
2
3D_13C-separated_NOESY
.338 mM [U-100% 13C; U-100% 15N] CXCL12/SDF1-alpha, .97 mM CXCR4, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
3
3D_13C-separated_NOESY (AROMATIC)
.338 mM [U-100% 13C; U-100% 15N] CXCL12/SDF1-alpha, .97 mM CXCR4, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
4
3D_13C-F1-filtered_13C-F3-separateded_NOESY
.338 mM [U-100% 13C; U-100% 15N] CXCL12/SDF1-alpha, .97 mM CXCR4, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
5
3D_15N-separated_NOESY
1.07 mM [U-100% 13C; U-100% 15N] CXCR4, 0.67 mM CXCL12/SDF1-alpha, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
6
3D_13C-separated_NOESY
1.07 mM [U-100% 13C; U-100% 15N] CXCR4, 0.67 mM CXCL12/SDF1-alpha, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
7
3D_13C-separated_NOESY (AROMATIC)
1.07 mM [U-100% 13C; U-100% 15N] CXCR4, 0.67 mM CXCL12/SDF1-alpha, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
8
3D_13C-F1-filtered_13C-F3-separateded_NOESY
1.07 mM [U-100% 13C; U-100% 15N] CXCR4, 0.67 mM CXCL12/SDF1-alpha, 90% H2O, 10% D2O
90% H2O/10% D2O
21
6.8
AMBIENT
308
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DRX
600
NMR Refinement
Method
Details
Software
AUTOMATED METHODS WERE USED FOR BACKBONE CHEMICAL SHIFT ASSIGNMENT AND ITERATIVE NOE REFINEMENT. FINAL STRUCTURES WERE OBTAINED BY MOLECULAR DYNAMICS IN EXPLICIT SOLVENT.
CXCL12/CXCR4 COMPLEX STRUCTURES ARE BASED ON A TOTAL OF 2092 NOE CONSTRAINTS (722 INTRA, 566 SEQUENTIAL, 238 MEDIUM, 420 LONG RANGE, 116 CXCL12 INTERMONOMER CONSTRAINTS (CXCL12 TO CXCL12), AND 86 INTERMOLECULAR CONSTRAINTS (CXCL12 TO CXCR4)) AND 128 PHI AND PSI DIHEDRAL ANGLE CONSTRAINTS. CONSTRAINT WERE IN ONE ASSIGNED AND VALIDATED IN ONE CXCL12/CXCR4 COMPLEX AND THEN DUPLICATED TO GENERATE A SYMMETRY RELATED CONSTRAINT IN THE SECOND COMPLEX. CONSTRAINT TOTALS LISTED ABOVE INCLUDE CONSTRAINTS FROM BOTH MONOMERS.